H mediated room temperature ferromagnetism in Zn0.98Cu0.02O

被引：7

作者：

Zhang, Hua ^{[1
]}

Wen, Zheng ^{[2
]}

Qi, Xiaosi ^{[3
]}

Si, Lifang ^{[1
]}

Xu, Liguo ^{[4
]}

Zhong, Wei ^{[3
]}

Wu, Di ^{[2
]}

Shen, Kai ^{[4
]}

Xu, Mingxiang ^{[1
]}

Qiu, Teng ^{[1
]}

Xu, Qingyu ^{[1
,5
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210008, Peoples R China

[3] Nanjing Univ, Dept Phys, Nanjing 210008, Peoples R China

[4] Nanjing Univ Aeronaut & Astronaut, Sch Mat Sci & Technol, Nanjing 210016, Peoples R China

[5] Southeast Univ, Key Lab MEMS, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 536卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Diluted magnetic semiconductors; ZnO; Ferromagnetism; DOPED ZNO; MAGNETIC SEMICONDUCTORS; THIN-FILMS; OXIDE; EMISSIONS; NANORODS; HYDROGEN; CU;

D O I：

10.1016/j.jallcom.2012.05.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zn0.98Cu0.02O powders have been synthesized by microemulsion method. The room temperature ferromagnetism was significantly suppressed, compared with the ZnO powders prepared by the same method. Enhanced room temperature ferromagnetism has been obtained after annealing in H-2 atmosphere at 500 degrees C for 2 h. The structural characterizations have confirmed the incorporation of the interstitial H and the suppression of the O vacancies. The possibility of the O vacancy mediated room temperature ferromagnetism has been excluded. Our results clearly demonstrated that the observed ferromagnetism originates from the neighboring Cu ions mediated by the interstitial H ions. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：184 / 188

页数：5

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